<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>Flot Examples</title>
    <link href="layout.css" rel="stylesheet" type="text/css">
    <!--[if lte IE 8]><script language="javascript" type="text/javascript" src="../excanvas.min.js"></script><![endif]-->
    <script language="javascript" type="text/javascript" src="../jquery.js"></script>
    <script language="javascript" type="text/javascript" src="../jquery.flot.js"></script>
    <script language="javascript" type="text/javascript" src="../jquery.flot.navigate.js"></script>
    <style type="text/css">
    #placeholder .button {
        position: absolute;
        cursor: pointer;
    }
    #placeholder div.button {
        font-size: smaller;
        color: #999;
        background-color: #eee;
        padding: 2px;
    }
    .message {
        padding-left: 50px;
        font-size: smaller;
    }
    </style>
 </head>
 <body>
    <h1>Flot Examples</h1>

    <div id="placeholder" style="width:600px;height:300px;"></div>

    <p class="message"></p>

    <p>With the navigate plugin it is easy to add panning and zooming.
    Drag to pan, double click to zoom (or use the mouse scrollwheel).</p>

    <p>The plugin fires events (useful for synchronizing several
    plots) and adds a couple of public methods so you can easily build
    a little user interface around it, like the little buttons at the
    top right in the plot.</p>
    

<script type="text/javascript">
$(function () {
    // generate data set from a parametric function with a fractal
    // look
    function sumf(f, t, m) {
        var res = 0;
        for (var i = 1; i < m; ++i)
            res += f(i * i * t) / (i * i);
        return res;
    }
    
    var d1 = [];
    for (var t = 0; t <= 2 * Math.PI; t += 0.01)
        d1.push([sumf(Math.cos, t, 10), sumf(Math.sin, t, 10)]);
    var data = [ d1 ];

    
    var placeholder = $("#placeholder");
    var options = {
        series: { lines: { show: true }, shadowSize: 0 },
        xaxis: { zoomRange: [0.1, 10], panRange: [-10, 10] },
        yaxis: { zoomRange: [0.1, 10], panRange: [-10, 10] },
        zoom: {
            interactive: true
        },
        pan: {
            interactive: true
        }
    };

    var plot = $.plot(placeholder, data, options);

    // show pan/zoom messages to illustrate events 
    placeholder.bind('plotpan', function (event, plot) {
        var axes = plot.getAxes();
        $(".message").html("Panning to x: "  + axes.xaxis.min.toFixed(2)
                           + " &ndash; " + axes.xaxis.max.toFixed(2)
                           + " and y: " + axes.yaxis.min.toFixed(2)
                           + " &ndash; " + axes.yaxis.max.toFixed(2));
    });

    placeholder.bind('plotzoom', function (event, plot) {
        var axes = plot.getAxes();
        $(".message").html("Zooming to x: "  + axes.xaxis.min.toFixed(2)
                           + " &ndash; " + axes.xaxis.max.toFixed(2)
                           + " and y: " + axes.yaxis.min.toFixed(2)
                           + " &ndash; " + axes.yaxis.max.toFixed(2));
    });

    // add zoom out button 
    $('<div class="button" style="right:20px;top:20px">zoom out</div>').appendTo(placeholder).click(function (e) {
        e.preventDefault();
        plot.zoomOut();
    });

    // and add panning buttons
    
    // little helper for taking the repetitive work out of placing
    // panning arrows
    function addArrow(dir, right, top, offset) {
        $('<img class="button" src="arrow-' + dir + '.gif" style="right:' + right + 'px;top:' + top + 'px">').appendTo(placeholder).click(function (e) {
            e.preventDefault();
            plot.pan(offset);
        });
    }

    addArrow('left', 55, 60, { left: -100 });
    addArrow('right', 25, 60, { left: 100 });
    addArrow('up', 40, 45, { top: -100 });
    addArrow('down', 40, 75, { top: 100 });
});
</script>

 </body>
</html>
